.mask_container {
  position: absolute;
  z-index: 99999;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

.mask {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
}

.btn_groups {
  position: absolute;
  right: 0;
  top: 0;
  padding: 3%;
  display: block;
}
